could you give some examples that what kind of programs don't work on Windows 2003 ? well, I think you mean Drivers, not Programs.. all programs that runs on XP should run smoothly on Win2003 as they both use win32, not like windows 98 & mellinnium that use win16 applications.. In my openion, The most irritating thing in windows 2003 is the driver support, but i think this problem should be overcomed the next few months..